Vehicle tie-down strap unit



FIG. 1 is a rear perspective view of the vehicle tie-down strap unit showing my new design;

FIG. 2 is a slightly reduced front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for vehicle tie-down strap unit, as shown. 